Unit 1 - sew a B to each end of the A
Unit 2 - sew D to E; then sew F to the D
Unit 3 - sew a B to the M
Unit 4 - sew a B to the N
Unit 5 - sew an H to J
Unit 6 - sew an H to K
Unit 7 - sew an L to each side of the bottom triangle on I

sew the C to the bottom of Unit 1
sew Unit 2 to the C
sew Unit 7 to the G
using a Y-seam, sew Unit 5 to the G + Unit 7
using a Y-seam, sew Unit 6 to the other side of the G + 7
sew Unit 3 to the left side
sew Unit 4 to the right side